Effects of occupancy estimation on abundance–occupancy relationships
Effects of occupancy estimation on abundance–occupancy relationships
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DOI：
10.1098/rsbl.2022.0137
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发表时间：
2022-06
期刊：
影响因子：
3.3
通讯作者：
Cleber Ten Caten;Lauren A. Holian;T. Dallas
中科院分区：
文献类型：
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作者：
Cleber Ten Caten;Lauren A. Holian;T. Dallas
丰度-占有率关系预测，占据更多地点的物种在当地也更丰富，而占有率通常是根据物种可以占据所有取样地点的假设来估计的。在这里，我们使用国家生态观测网络小型哺乳动物的数据来评估这一假设是否会影响丰度占用关系。我们估计占用考虑所有采样点（传统占用），只有在物种的地理范围内发现的网站（空间占用）和实现的环境生态位（环境占用）。我们发现，当占用估计只考虑网站可能的物种殖民（空间和环境占用）较弱的丰度占用关系进行了观察。这表明，假设该物种可以占据所有采样点直接影响到丰度-占有关系的评估。因此，仅考虑物种可能定居的地点来估计占有率将导致对丰度-占有率关系的更可靠的评估。
Abundance–occupancy relationships predict that species that occupy more sites are also more locally abundant, where occupancy is usually estimated following the assumption that species can occupy all sampled sites. Here we use the National Ecological Observatory Network small-mammal data to assess whether this assumption affects abundance–occupancy relationships. We estimated occupancy considering all sampled sites (traditional occupancy) and only the sites found within the species geographic range (spatial occupancy) and realized environmental niche (environmental occupancy). We found that when occupancy was estimated considering only sites possible for the species to colonize (spatial and environmental occupancy) weaker abundance–occupancy relationships were observed. This shows that the assumption that the species can occupy all sampled sites directly affects the assessment of abundance–occupancy relationships. Estimating occupancy considering only sites that are possible for the species to colonize will consequently lead to a more robust assessment of abundance–occupancy relationships.